DSS Racing FX Series Forged Piston Set

Fits Most Chrysler / Dodge / Jeep / Ram 5.7L Hemi Models

1-6706-3917 / 2-6706-3917 / 3-6706-3917 / K1-6706-3917 / K2-6706-3917 / K3-6706-3917

Overview:

The DSS Racing 5.7 Stroker Small Block Mopar Hemi Gen III FX Series Forged Piston Set is engineered for enthusiasts and builders seeking enhanced durability and performance for their Chrysler, Dodge, Jeep, or Ram 5.7L Hemi engines. Designed to accommodate the 390 small block Mopar Hemi Gen III with a 4.050" stroke and 6.125" rod length, these pistons provide a reliable upgrade for stroker engine builds.

With a compact 1.09" compression height and a -23cc dish top design, these pistons optimize combustion chamber volume for improved compression ratios ranging from approximately 7.9 to 9.33, depending on the specific piston dish volume selected. This versatility makes them ideal for a variety of performance applications, from street to mild race setups.

Key Features:

These forged pistons incorporate advanced design elements to ensure strength, reliability, and compatibility with high-performance Mopar Hemi engines:

• Forged construction for superior strength and durability under high stress
• Comp height of 1.09" optimized for stroker builds with 4.050" stroke crankshafts
• 23cc dish top design to control compression and prevent detonation
• .927" wrist pin diameter with options for full-floating or press-fit configurations
• Ring groove dimensions of 1.2mm (top), 1.2mm (second), and 3mm (oil ring) for reliable sealing
• Compatible with 6.125" connecting rods for precise fitment
• Available in multiple dish volumes (65cc, 74cc, 85cc) to tailor compression ratios
• Designed specifically for Chrysler, Dodge, Jeep, and Ram 5.7L Hemi Gen III engines

Construction & Design:

Each piston in the DSS Racing FX Series set is crafted from high-quality forged aluminum alloy, providing an excellent balance of lightweight performance and structural integrity. The forging process enhances grain structure, resulting in pistons that resist cracking and deformation even under elevated cylinder pressures and temperatures common in performance applications.

The pistons feature precision-machined ring grooves and a carefully engineered dish top to optimize combustion efficiency and reduce the risk of knock. The wrist pin bore is designed to accept either full-floating or press-fit pins, allowing builders flexibility based on their engine assembly preferences.

Installation & Fitment:

This piston set is engineered to fit most Chrysler, Dodge, Jeep, and Ram 5.7L Hemi engines equipped with Gen III small block Mopar Hemis. Installation requires standard engine assembly procedures, and compatibility with 6.125" connecting rods and a 4.050" stroke crankshaft ensures a straightforward swap for stroker builds. Builders should verify piston-to-valve clearance and ring end gap specifications during installation to ensure optimal performance and longevity.

What's Included:

• Set of 8 forged pistons with specified dish volume
• Wrist pin bushings or pins (depending on configuration)
• Ring groove machining for 1.2/1.2/3mm ring sets
• Installation guidelines and specifications

Ideal For:

This piston set is ideal for engine builders and performance enthusiasts upgrading or rebuilding their 5.7L Hemi engines to stroker configurations. Whether for street performance, mild racing, or custom builds requiring enhanced durability and tailored compression ratios, these pistons provide a reliable foundation for increased power and engine longevity.

DSS Racing — Founded in 1983 originally as Danny’s Speed Shop, DSS Racing has grown from a small Midwest performance engine shop into a respected name in forged engine components for the high-performance and racing markets. Based in St. Charles, Illinois, DSS is best known for its forged pistons and machined engine parts made in the USA that have been used in championship engines and thousands of builds, blending old-school racing roots with precision manufacturing for enthusiasts and racers alike.